You may have unwanted Spyware on your machine as a result of visits,
however inadvertent, to these types of sites.
Run SpyBot Search & Destroy and Ad-aware from this link: http://mvps.org/winhelp2002/unwanted.htm
HTH
--
siljaline
"Arguing with anonymous strangers on the Internet is a sucker's game
because they almost always turn out to be -- or to be indistinguishable from
-- self-righteous sixteen-year-olds possessing infinite amounts of free time."
- Neil Stephenson, _Cryptonomicon_